During the Covid-19 pandemic, wastewater testing became a virus warning system. Now, scientists are using the approach to understand how communities eat.
The White House recently endorsed monitoring sewage for evidence of drug use. Critics fear such efforts could violate privacy and stigmatize neighborhoods.
A San Francisco company paid nearly $1 million for the solution to an unsolved code in Kryptos, a sculpture on the C.I.A. grounds. Soon it will become an online challenge.
Encryption systems rely on βrandomβ numbers, but conventional computers canβt generate them perfectly. New research shows that quantum physics can.
In a new study, fossilized droppings suggested that ancient ground squirrels ate the meat of much larger animals, including mammoths, bison and saber-toothed cats.
A week after OpenAI made headlines with an A.I.-generated proof, a new βdeclarationβ by 16 experts raises concerns that the technology threatens math as a discipline.
By tracking eye movements in zebrafish, researchers identified four different types of sleep, analogous to the complex sleep patterns of humans and other animals.